111 lines
3.6 KiB
C
Executable File
111 lines
3.6 KiB
C
Executable File
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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/*
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* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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* PROPRIETARY NOTICE (Combined)
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*
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* This source code is unpublished proprietary information
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* constituting, or derived under license from AT&T's UNIX(r) System V.
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* In addition, portions of such source code were derived from Berkeley
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* 4.3 BSD under license from the Regents of the University of
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* California.
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*
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*
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*
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* Copyright Notice
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*
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* Notice of copyright on this source code product does not indicate
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* publication.
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*
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* (c) 1986,1987,1988,1989 Sun Microsystems, Inc
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* (c) 1983,1984,1985,1986,1987,1988,1989 AT&T.
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* All rights reserved.
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*
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*/
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#ifndef _SYS_PATHNAME_H
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#define _SYS_PATHNAME_H
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#pragma ident "@(#)pathname.h 1.13 94/10/27 SMI" /* from SVR4.0 1.7 */
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#include <sys/vnode.h>
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#include <sys/cred.h>
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#include <sys/uio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Pathname structure.
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* System calls that operate on path names gather the path name
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* from the system call into this structure and reduce it by
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* peeling off translated components. If a symbolic link is
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* encountered the new path name to be translated is also
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* assembled in this structure.
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*
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* By convention pn_buf is not changed once it's been set to point
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* to the underlying storage; routines which manipulate the pathname
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* do so by changing pn_path and pn_pathlen. pn_pathlen is redundant
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* since the path name is null-terminated, but is provided to make
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* some computations faster.
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*/
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typedef struct pathname {
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char *pn_buf; /* underlying storage */
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char *pn_path; /* remaining pathname */
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u_int pn_pathlen; /* remaining length */
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u_int pn_bufsize; /* total size of pn_buf */
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} pathname_t;
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#define pn_peekchar(pnp) ((pnp)->pn_pathlen > 0 ? *((pnp)->pn_path) : 0)
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#define pn_pathleft(pnp) ((pnp)->pn_pathlen)
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#ifdef __STDC__
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extern void pn_alloc(struct pathname *);
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extern int pn_get(char *, enum uio_seg, struct pathname *);
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extern int pn_set(struct pathname *, char *);
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extern int pn_insert(struct pathname *, struct pathname *);
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extern int pn_getsymlink(vnode_t *, struct pathname *, cred_t *);
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extern int pn_getcomponent(struct pathname *, char *);
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extern void pn_setlast(struct pathname *);
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extern void pn_skipslash(struct pathname *);
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extern void pn_fixslash(struct pathname *);
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extern void pn_free(struct pathname *);
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extern int lookupname(char *, enum uio_seg, enum symfollow, vnode_t **,
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vnode_t **);
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extern int lookuppn(struct pathname *, enum symfollow, vnode_t **,
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vnode_t **);
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extern int traverse(vnode_t **);
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#else
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extern void pn_alloc(); /* allocate buffer for pathname */
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extern int pn_get(); /* allocate buffer, copy path into it */
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extern int pn_set(); /* set pathname to string */
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extern int pn_insert(); /* combine two pathnames (symlink) */
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extern int pn_getsymlink(); /* get symlink into pathname */
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extern int pn_getcomponent(); /* get next component of pathname */
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extern void pn_setlast(); /* set pathname to last component */
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extern void pn_skipslash(); /* skip over slashes */
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extern void pn_fixslash(); /* eliminate trailing slashes */
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extern void pn_free(); /* free pathname buffer */
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extern int lookupname(); /* convert name to vnode */
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extern int lookuppn(); /* convert pathname buffer to vnode */
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extern int traverse(); /* traverse a mount point */
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#endif /* __STDC__ */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_PATHNAME_H */
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